Window screen



' y May 27, 1930. VV||. B. TROTT WINDOW S GREEN Filed Aug. 30, 1928 -lNvENToR v Patented May 27, 1930 Y i HARVEY` E. Enorm, or irmKEEsPORT,1EENNs'imvamfi WINDOW scEEENCr Application nea kimgusn:eo,` 192s. serial Eo. 302,927.

` window screens stiifen thein against movements in the planes in Whichthey rnaybe; Another objectisto provide a france coinposedof asingle piece.

@tlier obj ects appear hereinafter'. l

{Referring' to the accompanying fFig. 1 is a side tvievv*r of lny improved 'screen i EigL 2 an edge view ofnlthe s alnegFig. 3 an enlarged"side` view of onelcorner of the screen; Fig. 4' a View, ofFig. 3 yiewed from the` right; Fig. "5', la side viewof a screen before the frame `isjbrought intoA iinalshape and clamped to thefwire fabric; Fig 65a View of Aa blank from Vwhich: one "section "of my i `screen frame is Inade, parts being broken faway; Fig. 7, afvievv of a short portion 1ofthe `blank after it has been doubled 'ont itsflongitudinal center; land" Fig. 8, a'sectionon the linew8.--8 on Fig.1`; `j A* In Figs.-1f and 2 I show ai screenvmade of duplicate :adjustable rectangular" sections or one `1 member :will `be described. l y

`The frame for each rnemberis inadevfrom a single V"rectangular sheet-,metal strip or blank doubledt along its` longitudinal central `portionGand` bent `at` threewplaces at right f angles t0 formthreecorners oftheframe, the ends of thevblanklfnieeting `and forining the rfa The

`fourthV angle foftheframe which isirectangublank shovvnlin-Fig has; `Where each i of threecorners, are to `bernade,atriangillar openlng 12 yvithitsinner angle 13 `(vv/hichjis aright angle)` pointing toward the longitudi- Lnal center ofthe blank. The side lkof each center; of the` side' lof leach openingf 12. The sllts 17 are at right anglestothe side l5.

"openingl and the left`hand end ofthe The blank hasat the left ofthe side 14tof each `opening 12 a slit18 which is an extension of "the said sidefliand lies parallel With theside `15 ofthe blank. 4 Aslit `19eXtends from the side 16 of the blank toward theangle 13 of:

each opening 12 and is `at right angles to the side 16.` The slits on opposite `sides ofreach opening .12are lineally arrangedj The inner endsof the slits 19 do not reach the` angles 13, but leave afspaceor portion 20 `vvhichisto forrnthe corners of the frame. i rlhe spaces 20 equal the thickness of `the frame. The

`ends of the blank have notches 21 vandj'22 Y l which are each half the size of an opening 12. drawing, a

If theblank is :made into a hoop with its ends contiguous and matched, the notches 21 and 2-2fvvr/o`wuldV togetherfufforin` an opening having exactly the` samefsize, lshape andarrangement in the" blank as` the openings 12 have. The notch 22 has theslit 18a which carfresponds to the slit 18 accompanying each o pe`ning12. r Assume that the blankshovvn'in-Fig. 6 is to form thefraine for the screen section11, having thesides123, 24,' 25'and 26. Thesection 23aof the blank between the right hand end and the nearest opening 12 is to form the frame `side `23; lthe section- 2La-between `the latteropeningj12 and the next one to the y y y "leiftisto` fornrthe frame side2f1; the section members 10and11." Astheyare alike only `25a jbetlyveenthe latteropenin'g and the` next opening 12 to the left is to forni the frarne UNITED STATES PATENT oFF-ICE side25 and the section 26?L between'thelatter blank is lto form thefra'me side 2b.` i; q

"There area number of pairsfofiparallel slits extending from `theside u16of thegblank about to the center of the blank.'` The blank section 23e has two pairsfof slits near each .endl forming the tongues 2,7;` The'blank secof slits `forming the narrow` tongue 28 and near the .other` end a pair offslits` forming i `the tongue The blank. sectionw26` has sides or edges 15 and 16 lying in the same lane. The opposing or inner faces of the olded blank are spaced apart to receive between them the edges of the wire fabric 32. The longitudinal strip of the blank lying between the line 33 connecting the inner ends of the slits 19, and the line 34 connecting the angles 13` and the .inner ends of the notches 21 and 22 will form the periphery of the frame 11 when the sections of the folded blank are formed into a-rectangle. The folded blank has the side containing the openings 12 and the notches 21 and 22 provided with a bead 35, the slits 18 and 18 coming at the inner ed e of the bead;` Y

The b ank doubled as shown in` FU. 7 is bent at the placesor portionsy 20 to orm a rectangular figure or frame thetwo sides about the ang e 13 of each opening 20. come `together to form mitrej joints 36,. while the 'corresponding sides of the notches 21 and`22 come t ther to form the .mitre joints 36a. While t e corners of the frame are being made, the tongues 37 at the right of each. slit 17' are passedl through the slits 18. and bev heath the bead' 35, as clearly shown in Fig. 3.

The tongue 37 at lthe left handend of the blank passes through the s lit18. Y

The rectangular wire fabric 32 has itsedges between thelopposed folded members' of 'each side of thel frame.' It will be noted thatthe sides of the frame have the intermediate portion bowed outwardly initially as shown in Fig; 5. The sides'of the frame are afterwards bent'inwardlyso as to form a rectangular fig' one shown, Fi 4)` to receivey a nail orscrew.

The tongues 2'for the'gsection 11v are bent so as to project on ,the op osite side ofthe section from that from wich it originated, as shown in' Fig.l 4iA Thertongues 27 for the sec- 10 project from the'same sidel ofY the screenfas that fromwhich it originates, as shownatithe. Ieftzhandf end' ofr Fig.. 1'. Y Y v Thetongues 29 and 30 are bent outof their original planes and formed into `hook-like 'des orm'ember's". The screensections 10 ,andi 11 lie one onthe other.; andi the hookslike guides-4Q' on one memberhookover the edges of the" otherV member and hjolfdjA the members tggether'and" "uide' them as slideon each other.` This eature is shownin PatentNo. 1317];184 grantedto J. FeierabendQhFebmf?. .ft 191.6', and' fused; not befrther dief.

scribed. This patent also shows and describes tion as' defined in the appended claims.

I claim:

' 1. In a window screen, two rectangular frames slidably connected together, and wire fabric secured to the frames and tongues integral with the opposite ends of the screens, the free endsof the tongues formed' into hinge members.

2. In a window screen, two rectangular frames slidably connectedj together, and wire fabric secured to the frames and tongues integral with the opposite ends of thescreens,

the free ends of the tongues formed in-toA hinge members, and the tongues having openings for a fastening means.v

3. In a: window screen', two` rectangular frames slidably connected together,l wire fabric secured tjo the frames, andv arten-gue integral with the side of one frame and-standing in the path of the other' frame when the frames are collapsed; to a. predetermined degree.

4. A rect-angular. frame for as vwindow screen compris-ing a strip of sheet metal; folded lengthwiseV upon itself and. lying in only two planes, providingv two: oppositel)7 diieposed spaced-apart walls., and a wire fabric having its edges secured between and by the said. walls, the said walls beingl cut trans- ,.versely; at the corners of the' frame and the folded edge being continuous and bent atthe corners to form right angle corners and the walls` adjacent tothe cuts overlapping each otherl at thecornersfto form four thicknesses.

5. A rectaiigula-rv framef for a window screen comprising a strip ofv sheet metal' fold- -ed lengthwise upon itself andi lyingin only two planes, providingv twoa oppositelyl disposed spaced-apart walls, and ay wirel fabric having itsedges secured: between and bythe saidy wallsr the:- said4 walls'. being cut Vtransversely at the. corners of' the frame and the folded edge being continuous and bent at the corners to form right anglecorners and the walls adjacent to the cuts Voverlappin g each other at the corners to form four. thiclmesses and the" walls having lateral beads forming miter joints at tliecorn'ersof the frame..

f6. A. rectangular Aframe for a window screen 'comprisingja strip of sheet metal vfolded lengthwise uponitselff and lying in only two. planes, prclavidingl two oj'gposit'ely d-isposed separated-@art walls, and a wire fabrie having its edges secured between and by the said walls, the saidwalls being eut transversely at the Corners of the frame and the folded edge being continuous and bent at the corners to form right angle corners and the walls adjacent to the cuts overlapping l each other at the Corners to form four`thicknesses, and the sides of the frame being under elastic tension tending to move the fabric outwardly in the plane thereof.

In testimony whereof I affix my signature.

` HARVEY B. TROTT. 

